Drier.



W. J. KUNTZ.

DRIER:

APPLICATION FILED JAN. 19, I917- Patented June 12, 1917.

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WITNESSES ATTORNEYS W. J. KUNTZ.

DRIER.

APPLICATION FILED JAN. I9. 1917- 1 2 9 97 Patented June 12, 1917.

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DRIER.

APPLICATION FILED JAN. 19, 1917.

Patented J 11116 12, 1917.

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W/ TIVESSES v rant? H WILLIAM JACOB KUNTZ, 0F YORK, PENNSYLVANIA.

- DRIER. 1

resents.

Specification of Letters Patent.

Application filed January 19, 1917. Serial No. 143,249.

To all whom it'may concern:

Be it known that 1, WILLIAM J. KUNTZ,

a citizen of the United States, and a resident stationary feed head, and forced draft means through the shells and the feed head, my primary object being'to provide an improved construction adjacent the feed head whereby to obviate certain of the disadvantages, to be presently described, in constructions of this character as now used.

A further object of my invention is to provide a feed head and construction adjacent thereto, whereby to bring about operating advantages heretofore unknown, and render the entire drier more effective and efficient.

In the accompanying drawings which form a part of this specification, and illustrate my improvements:

Figure 1 is a side elevation illustrating the complete drier formed in accordance with my invention and embodying my present improvements;

Fig. 2 is a side view of the feed head detached;

' Fig. 3 is a front view thereof;

Fig. 4 is a rear 'view thereof;

Fig. 5 is a vertical sectional view through the feed head and adjacent parts, upon an enlarged scale;

Fig. 6 is a detail sectional view through the connecting rings between the external bearing of the feed head and the outer shell of the drum, and I Fig. 7 is a detail sectional view taken substantially on line 77 of Fig. 6.

Referring now to these figures, and more particularly Fig. 1, my improvements are directed to that type of drier including a rotating elongated drying drum consisting of inner and outer concentric shells 10 and 11, at the upper forward end of, which is a' feed head 12, which is hollow, and into the The upper portion of the feed head 12 is extended materially beyond the upper portion of the drying drum, as indicated at 15 in Fig. 1, and communicates with an Patented ram 12, tar t.

exhaust flue. 16 leading to a casing 17 of an exhaust fan, the space within the upper portion 15 of the-feed head communicating .with the upper forward end of the outer shell 11 of the drum, with which latter space the feed chute 18 carried by the feed head 12 also communicates in order that the material to be dried may be introduced into the space between the inner and outer shells 10 and 11 of the drum.;

In order to obviate all back'spill of inaterial from the upper end of the outer shell 11 1nto the feed head, the feed head 12 is,

,in accordance with my invention, provided at its rear Wall with a flanged opening 19, which, as best seen in Fig. 5, is provided with a cast iron'bearing band 20 surrounding the flange of the opening exteriorly of the feed head, for the reception of a cast ring 21, lL-shaped in cross section, and the contacting surfaces of which band 20 and ring 21 are machined to fit and thus form the rotatable support of the upper rear end of the outer shell 11, to which the ring 21, commonly known as a sealing ring, is adjustably connected. This adjustable connection is formed by connecting bolts 22, extending through enlarged openings 23 of the sealing ring 21, and also through openings of a ring 24, L-shaped in cross section, and secured internally of the upper rear end of the shell 11 as clearly seen by reference to Figs. 5 and 6, the outer headed ends of the bolts 2.2 having enlarged washers 25 whereby to cover the enlarged openings 23 in all positions, the latter providing for relative adjustment of the shell ring 24 with respect to the sealing ring 21, in order that the outer shell 11 may rotate in more or less eccentric relation to the ring 21 and the bearing band 20. I thus provide for a main concentric with its bearing on the feed head 12.

The flue 13 conveying the furnace gases enters an opening 26 in the front wall of the feed head 12 at the lower portion thereof, and around this opening the head is provided with an internal cylindrical shell 27 concentric with the opening 19, and the rear end of which shell extends through the said head, provides for the intake of air through trance of a forward extension neck 28 between fiue 13 and shell 27, which extension neck is attached to and revolves with the inner shell 10 of the drying drum as clearly seen in Fig. 5.

This extension neck 28, as seen in Fig. 5, extends practically the entire depth of the feed head, just .suflicient clearance being permitted to prevent the neck from rubbing against the front wall of the. feed head, and the purpose of this arrangement is to prevent the furnace gases from short circuiting from the ends of the furnace fiue directly to the fan or other draft medium. Thus, the abruptly tortuous passage between the rear end of the flue 13, extension neck 28, and thefeed head shell 27 offers such a resistance to the passage of the gases directly through the feed head, that the path of least resistance for the gases lies through the inner shell 10 and the outer shell 11 of the drying drum, as indicated by the arrows in Fig. 1. Furthermore, the slightly larger opening 26 in the front wall of the feed the front of the feed head around the flue 13, which fully satisfies the tendency of the draft through this space, in addition to which a certain proportion of the air drawn through this openin is received in the inner shell 10 by virtue o the suction of the gases passing into the same, so as to mix with the furnace gases and assist in consuming any of the gases, combustion of which may not have been completed due to insuflicient air in the fire box of the furnace 14-.

Around the lower portion of the rear opening 19 of the feed head, as before described and around the lower portion of the extension neck 28, is a plate 29, which completely closes the lower portion of the space between the flanged opening 19 and the rear end of the internal shell 27 of the head, the

.upper ends of the curved plates 29 being terminated as shown in Fi 4, substantially in the horizontal plane 0 the axis of the flanged opening 19, and one end thereof being connected, as by means of rivets and the like 30, with the lower end of an upwardly and forwardly inclined feed plate 31, onto the upper portion of which depends the lower rear end of the feed chute 18, before described, opening forwardly and upwardly through the front wall of the feed head, at one side of its inner shell 27, so asto feed the material disposed therein into the upper forward end of the outer shell 11 of the drum, as desired. It is obvious that the feed hopper or chute 18 may. be placed u on either side of the center line of the eed head as desired.

The upwardly extending portion 15 of On one or both sides of the feed head there are also provided openings normally covered by hinged doors 33, for inspection of and entrance into the same, and in the front Wall, near the bottom, are hand holes for inspection and cleaning of the space below the shell 27, covered'by small swinging doors 34:.

The furnace flue 13 extending into the front opening 26 of the feed head, is supported on brackets 35, riveted or otherwise secured to the front wall of the feed head.

The feed head 12 as an entirety is supported upon cast legs 36, and the bearing band 20 before described is provided with openings with which the inner rear ends of lubricating pipes 37 are connected, so as to supply a suitable lubricant to the outer bearing face of the band.

Thus, by the construction of feed head as described, the material to be fed into the drum for drying may be fed to a greater distance inside of the drying drum, and the upper end of the drying drum is practically closed against the escape of any material or what is known as back spill thereof into the lower portion of the feed head. Furthermore, dust drawn out of the drying drum by the Velocity of the gases and which may be deposited in the feed head on account of the reduced velocity of the gases in the uptake to the fan connection 16, will fall onto the feed chute and feed plate, and will return to the outer shell 11.

- Better bearing is had by virtue of the particular rotatable connection as before described of the upper'forward end of the drying drum, and with the elimination of all disadvantages-usually occurring by virtue of back spill into the feed head, eflectiveness and efii'ciency of the entire drier is materially increased, and greater life of the feed head promoted.

I claim 1. In a drier, 'a feed head having an internal cylindrical shell, a drying drum having an inner shell, an extension secured to said inner shell of the drum and projecting into the feed head at one side and into the said cylindrical shell thereof, and a gas conveying fiue leading into the opposite side of the feed head and into said shell extension.

2. Ina drier, a feed head having an in'ternal cylindrical shell, a drying drum having an inner shell, an extension secured to said inner shell of the drum and projecting into feed. head having an enlarged opening around the said flue to admit air between the same and the said extension and into the inner shell of the drum.

3. In a drier, a drum having inner and outer shells, a feed head having an inner shell into which the inner shell of the drum extends, and a plate around the lower portion of the feed head between the same and the inner shell thereof, to prevent the entrance of material intothe feed head from the lower portion of the adjacent end of the outer shell of the drum.-

4L. In a drier, a drum having inner and outer shells, a feed head having an inner shell into which the inner shell of the drum extends, and a plate around the lower portion of the feed head between the same and the inner shell thereof, to prevent the entrance of material into the feed head from the lower portion of the adjacent end of the outer shell of the drum, and a feed chute extending angularly through the feed head at one sideof the said shell thereof.

5. In a drier, a drum having inner and outer shells, a feed head having an inner shell into which the inner shell of the drum extends, and a plate around the lower portion of the feed head between the same and the inner shell thereof, to prevent the entrance of material into the feed head from the lower portion of the adjacent end of the outer shell of the drum, and a feed chute extending angularly through the feed head at one side of the said shell thereof, said feed chute consisting of a feed hopper and a feed plate, the latter of which is secured at its lower inner end to one end of the said lower plate of the feed head.

6. In a drier, a drum having inner and outer shells, a feed head into which the inner shell extends, having a flanged opening of a diameter less than that of the outer shell, a bearing band externally of thefeed head and around the flange of said opening, and a sealing ring around and engaging said band and secured tothe said outer shell.

7. In a drier, a drum having inner and outer shells, a feed head into which the inner shell extends having a flanged opening of a diameter less than that of the outer shell, a bearing band externally of the feed head and around the flange of said opening, a sealing ring around and engaging said band, and adjustable connections between the said sealing ring and the said outer shell.

8. In a drier, a drum having inner and outer shells, a feed head into which the inner 'shell extends, having a flanged 0pening of a diameter less than that of the outer shell, a bearing band'externally of the feed head and around the flange of said opening, a sealing ring around and engaging said band and secured to the said outer shell, connecting rings secured internally of the adjacent end of the outer shell, and adjustable connections between said connecting ring and the said sealing ring.

IVILLIAM JACOB KUNTZ. lVitnesses ANDREW J. HERSHEY, E. PHILIP S'rons. 

